Add: (2ab+3a²) and (-5ba+4b)

-10a^{2}b^{2}+8ab^{2}-15ba^{3}+12a^{2}b

Step-by-step explanation:

1. use foil method : -10a^{2}b^{2}+8ab^{2}-15ba^{3}+12a^{2}b

2. arrange it if there is nothing to add or subtract : ??

jml angle lkj & angle mj = lm

sas (side angle side)

aa(angle angle)

sss(side side side)

sas you have to find two sides with an angle in between

aa you find two angles because it will always add up to 180

sss find all sides

step-by-step explanation: